| Acronym | Definition |
|---|
| ENSI➣École Nationale Supérieure d'Ingénieurs (French engineering school) |
| ENSI➣Environment and School Initiatives |
| ENSI➣Encuesta Nacional Sobre Inseguridad (Spanish: National Survey on Insecurity; Mexico) |
| ENSI➣Essex National Securities Inc. (Napa, CA) |
| ENSI➣Evolution and Nature of Science Institute |
| ENSI➣Emerging Non-traditional Security Issues |
| ENSI➣Energia Nucleare Sub Italia |